occidentalis, Xenocara Regan [C. T.] 1904:257, Pl. 14 (fig. 5) [Transactions of the Zoological Society of London v. 17 (pt 3, no. 1); ref. 3621] Canelos, eastern Ecuador. Syntypes: (7) BMNH 1880.12.8.69-74 (6). Type catalog: Ferraris 2007:223 [ref. 29155]. •Valid as Ancistrus occidentalis (Regan 1904) -- (Ovchynnyk 1967:39 [ref. 37559], Isbrücker 1980:71 [ref. 2303], Burgess 1989:437 [ref. 12860], Isbrücker 2001:25, 32 [ref. 25653], Isbrücker 2002:12 [ref. 27178], Fisch-Muller in Reis et al. 2003:377 [ref. 27061], Ferraris 2007:223 [ref. 29155], Barriga Salazar 2014:113 [ref. 35745]). •Synonym of Ancistrus malacops (Cope 1872) -- (Provenzano & Barriga-Salazar 2018:227 [ref. 36344]). Current status: Synonym of Ancistrus malacops (Cope 1872). Loricariidae: Hypostominae. Habitat: freshwater.